Engineering

Engineering, 04.07.2019 19:10, shayshay7874

An electric kettle is made out of stainless steel, weighs two pounds (when empty) and is equipped with a heating element that consumes 2 kw of electricity. assuming that the water and the kettle are at the same uniform temperature at any moment of time, calculate the shortest possible time to bring 2 quarts of water from room temperature to the onset of boiling

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Engineering, 06.07.2019 03:10, lacourboud20005

An electrical kettle is made out of stainless steel,weighs two pounds (when empty) with a heating element that consumes 2 kw of electricity. assuming that the water and the kettle are at the same uniform temperature at any moment of time, calculate the shortest possible time to bring 2 quarts of water from room temperature to the onset of boiling.

Answers: 1

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Chemistry, 24.08.2019 03:10, drainy0uandthefish

In an electrically heated boiler, water is boiled at 140°c by a 90 cm long, 8 mm diameter horizontal heating element immersed in water. the heating element is made of mechanically polished stainless steel. the boiler initially contains 0.25 m of water at 20°c. once boiling starts, it is observed that 25% of the water in the boiler evaporated in 60 min. i. determine the power rating of the electric heating element immersed in water and the surface temperature of the heating element. [8 marks] ii. using the above heater, estimate the time required to raise the temperature of 0.25 m2 of cold water from 20°c to 140°c

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Physics, 10.09.2019 03:30, wcraig1998

The burner on an electric stove has a power output of 2.0 kw. an 810 g stainless steel tea kettle is filled with water at 20∘ c and placed on the already hot burner. if it takes 2.4 min for the water to reach a boil, what volume of water was in the kettle? stainless steel is mostly iron, so you can assume its specific heat is that of iron.

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